Method and apparatus for using memory compression to enhance...

Details Method and apparatus for using memory compression to enhance... Method and apparatus for using memory compression to enhance...

2008-03-04

2008-03-04

Torres, Joseph D. (Department: 2112)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

C714S779000

Reexamination Certificate

active

10944172

ABSTRACT:
A system for improving a memory's error detecting and error correcting capabilities. During operation, the system receives a data-word. Next, the system compresses the data-word into a compressed-word. If the amount of compression is greater than or equal to a compression-threshold, the system applies a strong error-correcting-code to the compressed-word to generate a coded-word. On the other hand, if the amount of compression is less than the compression-threshold, the system applies a weak error-correcting-code to the data-word to generate a coded-word. In either case the size of the coded-word is less than or equal to the size of a storage-word. The system then generates a flag that indicates the type of error-correcting code that was used to generate the coded-word. The system then stores the flag along with the coded-word in the memory.

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Chauchin Su and Jyrghong Wang, ECCSyn—A Synthesis Tool for ECC Circuits, IEEE 1993.

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